I'm hoping to get some opinions from any of you who have experience with the EcoTec3 4.3L V6 and the 5.3L EcoTec3 V8. I've looked at the stats (HP, torque, etc.), but I'm curious to hear from people who have them. I've been driving a 2007 Ford F-150 4X4 5.4 liter V-8, and thinking of trading it in. Leaning toward Chevy because I've found a few pretty good deals locally. Kind of have my choices narrowed down (best deals I can find) to these: New 2017 Z-71 with the 5.3 V-8 New 2017 Z-71 with the 4.3 V-6 New 2018 4X4 with the 5.3 V-8 Normally, it would be a no-brainer to go with one of the 5.3 V-8's. The gas mileage is almost the same. I think the V-6 is only rated 1 or 2 MPG better than the V-8. But the V-6 is loaded with more features (ie., heated leather seats, etc., which my wife actually cares about more than I). Also I do NOT do a lot of towing. Rarely, actually; but I like having the 4-wheel drive for winter, and occasional jaunts through fields, etc.. Also, there's a possibility that I might end up moving back to PA at some point, where I'd definitely want 4-wheel drive. So I'm not overly concerned about the towing, since most of that would be towing a flat trailer with sod or the occasional U-Haul. I'm 67, so I'm hoping this might be the last truck I'll ever buy. So I'm wondering whether the 4.3 V-6 is as reliable as the V-8. This particular V-6 has only been available since 2014. Anyway, I welcome hearing some opinions on those with actual experience with them. Thanks!